Is it worth the effort to replace timing chain tensioners to reduce rattle on startup?

I have a 2018 Forester that makes an awful rattle at cold startup and goes away within a second. I'm pretty sure it's just a timing chain tensioner taking time to get pressure.

Is it worth the time to take the cover off and replace the tensioners and other timing system components? Will new tensioners also lose tension and allow the chain to slap around on cold startup?